jarani, I've the same problem as you. What is odd is the fact that my wife's laptop with the same software, XP, has not got the problem and my machine(dual booting XP and Windows 7) does not when using Windows 7.
I have been onto Orange three times. The first time they said that they were working on the problem. The second time they sent me an email with some possible fixes (including checking the computer time) and a link that would not open.
The third time after I complained about the bad link, they repeated the "we're working on it" message.
I'm doing the same as you and disregarding the security certificate message and getting my emails.